Backless shirt



FIG. 1 is a front perspective view of a backless shirt showing my new design;

FIG. 2 is a left side perspective view thereof, the right side being a mirror-image;

FIG. 3 is a back perspective view thereof;

FIG. 4 is a front view; and,

FIG. 5 is a back view.

The broken line showing of the person is for illustrative purposes only and forms no part of the claimed design. The broken lines on the garment are understood to represent stitching. 

The ornamental design for the backless shirt, as shown and described. 